<!DOCTYPE html>
<html lang="en">

<head>
	<meta charset="UTF-8">
	<meta name="viewport" content="width=device-width, initial-scale=1.0">
	<meta http-equiv="X-UA-Compatible" content="ie=edge">
	<title>Document</title>
</head>
<style>
.iframe{
width: 50%;
float: left;
height: 400px;
}
</style>
<body>
	<div class="iframe">
		<iframe src="./iframe1.html" frameborder="0"></iframe>
	</div>
	<div class="iframe">
		<iframe src="./iframe2.html" frameborder="0"></iframe>
	</div>
</body>
<script src="./js/subject.js"></script>
<script>
	var subject = new subject();
</script>

</html>